JP3333167B2 - Multi device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a multi-device, and more particularly, to a left and right side edge portion of an agricultural membrane which can be reliably covered as desired, and the agricultural membrane is released by wind pressure during a covering operation. The present invention relates to a multi-device in which no problem occurs.

[0002]

2. Description of the Related Art A so-called tunnel multi-unit in which a synthetic resin film or sheet such as polypropylene (hereinafter referred to as an agricultural membrane) is coated on an arch-shaped column which is planted (erected) in a ridge is disclosed in No. 8-56503, Utility Model No. 2525637, Japanese Patent Publication No. 57-29122, and the like. A roll-wound agricultural membrane is suspended and provided so as to be able to be fed out, and a stepping body (stepping pressure) arranged side by side on the left and right sides Soil covering members (such as earthing discs) that cover the left and right side edge portions of the agricultural membrane while stepping on the left and right side edge portions thereof by a subsequent arrangement for each treading body.
Basically, it is configured to cover the soil.

[0003]

The hardness or the ground level (height) of the ground on the right and left sides of the ridge between the ridges is determined by the difference in tire tread pressure due to the presence or absence of running of the work vehicle and the difference in the number of runs. Is different, it is necessary to separately adjust the cutting depth and the cutting angle to the ground in the left and right covering members. Therefore, when moving to the next ridge, etc., it is necessary to repeat the work of stopping the work vehicle and performing the above adjustment on the left and right covering members, which is extremely troublesome and reduces the work efficiency. Was one of the causes.

[0004] On the other hand, the stepping body has been extended or covered with the ridge by stepping on the left and right side edge portions of the agricultural film body as described above. There was a risk that the agricultural film body would come off from the soil. In particular, in the case where the ground on the left and right sides sandwiching the ridge has different ground levels, the possibility of this separation has also been increased. When the agricultural film body is detached from the tread, the agricultural film cannot be extended, so that the detached film has to be re-engaged with the tread, and thus the operation is liable to be interrupted.

Further, when turning on a headland or moving to the next ridge, etc., the left and right treads must be lifted once. At this time, since the agricultural membrane comes off from the tread, the agricultural membrane is turned. When the left and right treads are grounded after work,
An operation of manually re-placing (inserting) the agricultural membrane into the stepping body is required, which has led to a reduction in efficiency. The present invention makes it possible to easily and quickly adjust the depth of cut of the left and right soil covering members into the ground when the ground on the left and right sides sandwiching the ridges has different ground hardness and ground level, and independently of each other. It is a first object of the present invention to provide a multi-device capable of reliably covering the left and right side edge portions of an agricultural membrane with as much as possible.

Further, Japanese Utility Model Publication No. 51-18281 (Reference 1) and Japanese Utility Model Publication No. 5-31894 (Reference 2) disclose a multi-device in which the depth of cut of a covering member can be separately adjusted on the left and right sides. Japanese Patent Application Laid-Open No. 4-29722 (Document 3) discloses configurations in which a soil covering member is moved up and down by a hydraulic cylinder by an operator's hand operation. However, the earthenware of Document 1 is to be digged into the soil by the suction of the blade portion 5e (see column 4, lines 7 to 10), and in Document 2, the earthen cover is urged downward by a spring. (See column 3, lines 20-24), and the soil cover disc in Literature 3 is due to its own weight (column 5, line 2).
See lines 4-26).

In the tunnel multi-work (multi-work), two to three processes such as rotary plowing and seeding / transplanting with a tractor or the like are performed as a pre-work, and the left and right grounds (valleys) of the ridges are treads by the tractor. The earth covering member acts on this part. For this reason, when suction is performed by the blade portion as in Document 1, the blade portion cannot be bitten into the hard tread portion, and even when using a spring as in Document 2, the hard tread portion cannot be crushed (see Document 2). Obviously, it cannot be done with a weight of 3).

Therefore, at present, generally, an additional weight or the like is mounted. Therefore, in the present invention, the covering member is pressed downward from the ground contact state by the expansion and contraction operation of the hydraulic pressure drive unit, specifically, the hydraulic cylinder. When,
Even with the tread portion hardened by the tractor, there is no insufficient cutting and the soil cover amount is sufficient. In addition, the hardness of the tractor tread portion changes on the left and right sides, which changes the amount of soil covered on the left and right sides of the mulch. The present invention has solved such a problem.

Although the present invention is useful when applied to a so-called tunnel multi-unit, for example, Japanese Utility Model Publication No.
As disclosed in Japanese Patent No. 3287, the present invention can also be applied to a multi-device that directly covers a ridge surface.

[0010]

SUMMARY OF THE INVENTION The present invention relates to a traveling vehicle
A coating unit including a film supply unit and a coating unit;
7 is the left and right sides of the agricultural membrane P supplied from the membrane supply unit 4
Stepping body 5 for stepping on the edge portion, and stepping on the stepping body 5
Soil covering member for covering the left and right side edge portions of the peeled agricultural film body P
6 and a pair of left and right support rods 2 that can move up and down around a horizontal axis 19.
0, and the left and right support rods 20 are
A pair of left and right height adjusting means 2 vertically moved by the driving unit 21a
1 with respect to the right and left height adjusting means 21.
Change the posture of the treading body 5 and the earth covering member 6 upward from the ground contact position
A state in which the left and right support rods 20 are simultaneously moved up and down in order to
Press the left and right soil covering members 6 downward at the grounding position to cut them.
The left and right support rods 20 are independently raised to adjust the insertion depth.
The associated worker of the traveling body 1 switches between the lowering state and the moving state.
And a fluid pressure valve for operating the pump .

By adopting such a configuration, even when the ground on the right and left sides sandwiching the ridges has different ground hardness and ground level, the cut depth of the left and right soil covering members into the ground can be controlled by the fluid pressure. Easy and fast, and driving
The left and right sides of the agricultural body can be adjusted independently by a manual operation by the operator accompanying the machine body , so that a sufficient amount of soil can be covered on the left and right side edge portions of the agricultural membrane. Further, the present invention relates to the
Each of the right support rods 20 has a tread body 5 and a cover
The member 6 is urged against the ground to follow the unevenness of the valley B
Having the waist-folding means 22 and the repression means 24
Features. Further, the present invention provides the pair of left and right
And a holding tool 36 which can be freely attached to and separated from the holding tool 36.
Is an agricultural film in a state where the treading body 5 is floated above the ground.
P is held so as to cooperate with the stepping body 5.
And features. In the present invention , the left and right support rods 20 are pivotally attached to the traveling body 1 by a horizontal shaft 19 so as to be vertically rotatable, and the left and right soil covering members 6 and the left and right fluid pressure drive units 21a are attached to the left and right support rods 20. preparative and mounted respectively, that are shorter length L2 to the installation position of the hydraulic drive unit 21a to the length L1 to the mounting portion of the soil cover member 6 from the lateral axis 19.

By adopting such a configuration, since the lengths L1 and L2 of the mounting portions satisfy L2 <L1,
The soil cover member 6 can be strongly pressed downward by a small movement of the fluid pressure drive unit 21a, and therefore, the cut is also ensured. In the present invention, as described above, a multi-device for directly covering the ridge surface may be used. However, the roll-wound agricultural film body is an arch that is planted at intervals in the ridge longitudinal direction. It is recommended that the tunnel mulch be coated on a shaped tunnel post.

[0013]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, embodiments of the present invention will be described in detail as a tunnel multi-device with reference to the drawings.
As described above, the present invention is also applicable to a ridge surface coating device (multi-device). In the following embodiment, the first
After achieving the purpose of the above, furthermore, either when the left and right treads are stepped on the both side edges of the agricultural membrane and extended, or when the left and right treads are raised to move to the next ridge Also, by holding the agricultural membrane in cooperation with the treading body, the multi-device that does not require separation of the agricultural membrane due to wind pressure and that does not require manual operation of turning the agricultural membrane after turning A multi-apparatus having a second object to do so is disclosed.

That is, according to the embodiment of the present invention, in order to achieve the second object, in addition to having the configuration according to any one of claims 1 to 4, the following technical features are provided. Take steps. That is, the multi-equipment includes a holding tool which can be freely moved toward and away from the treading body, and the holding tool cooperates with the treading body with the left and right side edge portions of the agricultural film body in a state where the treading body is raised above the ground. It is configured to work and pinch. By adopting such a configuration, during the covering operation of inserting the left and right side edge portions of the agricultural film body that is rolled between the tread body and the holding tool, and performing the covering work by grounding the tread body, Even if wind pressure acts on the agricultural membrane, since this agricultural membrane is sandwiched by the holding device,
There is no separation from the left and right treads, and therefore, no interruption of the work or the like is caused.

Further, when turning on a headland or the like, the left and right treads are lifted (floated). In this state, the agricultural membrane is held by the holding tool in cooperation with the treads. It is not necessary to manually insert (insert) the agricultural membrane, and therefore, it is possible to immediately shift to the coating operation after turning. Further, it is recommended that the holding tool be freely movable toward and away from the stepping body by elastic force. By adopting such a configuration, the agricultural film body is sandwiched by the concave shape and is reliably prevented from being detached.For example, by forming the holding member in a sled shape with a bar, the agricultural film body can be used during the feeding. It is possible to obtain an advantage that the film is less likely to be broken and the film is smoothly and lightly fed.

Further, according to the present invention, in the above-described configuration,
It is recommended that the treading body and the holding device be vertically movable synchronously with each other along the vertical direction according to the unevenness of the ground. By adopting such a configuration, during the vertical movement of the treading body and the holding device, the distance between the treading body and the holding device is always kept at a fixed distance, and it is possible that the agricultural membrane is clogged at this portion. Is prevented. Further, in the present invention, in the above-described configuration, a plurality of roll receiving means for supporting the agricultural film body wound in a roll so that the agricultural film body can be unwound can be provided at predetermined intervals in the left-right direction and the unwinding direction of the agricultural film body. Is recommended.

By adopting such a configuration, when the rolled agricultural film is suspended so as to be able to be unwound, the bending of the roll-shaped agricultural film (the phenomenon of bending in a curved shape) can be suppressed. Therefore, not only can the dispensing be smooth and light, but even if the diameter of the roll-shaped agricultural membrane is gradually reduced by dispensing, it can follow this and secure its receiving. FIGS. 1 to 6 show a first embodiment, in which a traveling machine body 1 shown as a transport trolley includes a traveling device 2 shown in the form of right and left crawlers, preferably a rubber crawler. It is possible to travel along the ridge longitudinal direction (arrow F in FIG. 2) over the ridge A on the valley B of the ridge A indicated by.

Since the arch-shaped tunnel support C is erected on the ridge A at an interval in the longitudinal direction (erect by driving), the traveling body 1 is correctly positioned so as not to interfere with the support C. It is framed in a gate shape when viewed from the rear (in the front-rear direction), and can be steered (including turning) by an operator grasping and accompanying a steering handle (not shown).
A multi-device 3 according to the present invention is provided behind the traveling body 1, and the multi-device 3 can be rolled and unwound from a film or sheet (hereinafter, referred to as an agricultural film P) of polypropylene, polyethylene, or the like. It is mainly composed of a suspended membrane supply unit 4, and a covering work unit 7, which is a pair of a treading body 5 and a soil covering member 6 exemplified by a wheel shape, and is arranged side by side in a left and right pair. The left and right side edge portions of the rolled agricultural film P are stepped on the ground by the left and right treads 5 to cover the tunnel support C while being extended, and the left and right soil covering members 6 cover the left and right sides of the agricultural film P. It is configured to cover the edge part.

As shown in FIGS. 2 and 3, the film supply unit 4 has a toolbar 9 installed on the rear part of the left and right support members 8 extending rearward from the left and right sides of the traveling body 1. A pair of left and right support stays 10 are provided below the left and right support stays 10 so that the position of the support stays 10 can be freely changed and fixed in the left and right direction. Left and right pairs.
The left and right first support arms 11 are suspended so as to be able to pay out the roll-wound agricultural film body P, and are pivotable with respect to the support stay 10 by a pin or the like which is swingable up and down around a fulcrum O. A rectangular pipe 13 is attached to the front end of the first support arm 11 in the left-right direction, and left and right supports 14 are inserted into the rectangular pipe 13 so as to be freely changeable in the left-right direction. Both ends of the agricultural film body P rolled around 14 are suspended so as to roll freely.

The first support arm 11 is provided with the pin insertion hole 1
1A is formed, the fulcrum O can be changed by inserting and removing a pin in this hole 11A, and the roll length of the agricultural membrane P can be changed by changing the position of the left and right supports 14 in the left and right direction. It is possible to correspond to large and small. The left and right second support arms 12 rotatably support the roll receiving means (receiving roll) 15, and are attached to the support stay 10 by two pin members that can be inserted and removed.
An insertion hole 12A for this pin member is formed, while a plurality of upper and lower insertion holes 10A are formed in the support stay 10.

Accordingly, the front and rear positions of the roll receiving means 15 are adjusted by inserting and removing the two pin members, and one of the two pin members is inserted into the insertion hole 10A to adjust the vertical position. The agricultural film P is supported from below by the roll receiving means 15 corresponding to the diameter of the rolled agricultural film P, and the roll receiving means 15 Since a plurality of, and two in the figure, are provided at predetermined intervals in the left-right direction, even if the agricultural film body P is wide, bending (warping) is suppressed and smooth feeding is possible. , The agricultural membrane P is a fulcrum O
Is provided on the first support arm 11 that moves up and down around the center, so that even if the diameter is gradually reduced by the feeding, the roll is reliably supported by the roll receiving means 15 and the fluctuation of the feeding position is reduced. is there.

The second support arms 12 are connected to each other by a stay 16, and the stay 16 is provided with a third support arm 17 extending forward.
7 is provided with a tensioning means 18 shown in the form of a roller, and this tensioning means 18 prevents slack of the agricultural film P which is being fed forward and at the center in the left-right direction of the agricultural film (roll) P. ing. The left and right covering working parts 7 are pivotally attached to the lower left and right sides of the traveling body 1 so as to be movable up and down with a horizontal axis 19 as a fulcrum, and extend to the left and right support rods 20. Each is mounted on the rear.

With respect to the left and right support rods 20, a horizontal axis 1
In front of 9, fluid cylinder (return hydraulic cylinder)
The height adjustment means 21 provided with the fluid pressure drive unit 21a exemplified in (1) is provided for each of the left and right sides. Here, left and right support rods 20 are pivotally attached to the traveling machine body 1 by a horizontal shaft 19 so as to be vertically rotatable, and the left and right soil covering members 6 and the left and right fluid pressure drive units 21 a are attached to the left and right support rods 20. The length L2 from the horizontal axis 19 to the mounting site of the soil covering member 6 is shorter than the length L1 from the horizontal axis 19 to the mounting site of the fluid pressure drive unit 21a. Thus, the left and right earth covering members 6 can be pressed downward with a large force by a small movement (short stroke) of the fluid pressure driving unit 21a, and the cut can be ensured.

As shown in FIG. 1, left and right height adjusting means 2
After the outlet side (extending movement) ports 70 are connected to each other via the operation valve 71, the fluid pressure drive unit 21 a used for the first valve 1 is connected from the operation valve 71 to one of the selection ports of the switching valve 72. The input side (retraction / retraction) ports 74 are connected directly to each other, and then connected to the other selected port of the switching valve 72. And this switching valve 7
2 is connected to a pump 76 provided integrally with or separately from an engine 75 mounted on the traveling body 1.

The operation valve 71 is in a state in which one of the two is selected (a state in which the left or right height adjusting means 21 can be operated alone) or a state in which the two are merged. (A state in which both the left and right height adjusting means 21 can be operated at the same time) or a state in which both sides are closed (a state in which both the left and right height adjusting means 21 are immobilized), for a total of four types of switching. Operation is now possible. Further, the switching valve 72 sets a state in which the operating pressure is applied to one selected port and the other selected port is released (a negative pressure may be applied to the selected port on the release side).
Switching for alternately switching between both selected ports (that is, selecting whether to cause the fluid pressure driving unit 21a to perform the operation in the extension direction or the operation in the contraction direction in both the left and right height adjustment means 21). Operation is now possible.

The switching valve 72 may have the above-described two-way closing function of the operation valve 71. The operation of the operation valve 71 and the switching valve 72
Although illustration is omitted, a valve handle provided directly or indirectly via a transmission cable or the like with the valve body in the vicinity of the above-described steering handle, or in the case where an electric drive unit is provided in the valve body, near the steering handle The operation can be performed by electrical switches and the like provided on the vehicle body, and this operation is performed by an operator or the like accompanying the traveling body 1.

For example, when the operation valve 71 selects a state in which both the left and right height adjusting means 21 are operable, the switching valve 72 operates the fluid pressure driving section 21 a of the both height adjusting means 21.
The hydraulic drive units 21a perform the extension operation or the contraction operation depending on whether the setting is made to perform the extension operation or the contraction operation, and the left and right support rods 20
9 at the same time, as a result, the left and right covering working parts 7 (that is, the treading body 5 and the earth covering member 6) are simultaneously in the working position (see FIG. 2) in contact with the ground and the non-working position above the working position. (See FIG. 6).

Here, the right and left height adjusting means 21
The direction in which the covering member 6 reaches the ground when the left and right covering members 7 are set to the working position is a direction in which the covering member 6 is further pressed downward (that is, the fluid pressure driving part 21a is retracted). Direction). Therefore, for the left and right earth covering members 6, the depth of cut or the depth of cut can be adjusted by the operator's hand operation. Such a function is provided by ridge A
This is very useful when the ground on the left and right sides sandwiching is more hard than the normal ground hardness, or when it is desired to cover the left and right side edge portions of the agricultural film P with more soil than usual.

At this time (when the earth covering member 6 has reached the ground), an operation is performed by the operating valve 71 so that only one of the left and right height adjusting means 21 can be operated. Due to the expansion and contraction operation of one (for example, left) fluid pressure drive unit 21a, only one support rod 20 on the same side is moved up and down around each horizontal axis 19, and as a result, one of the left or right Only the covering work part 7 can be moved up and down independently. For this reason, even when the ground on the left and right sides sandwiching the ridge A has different ground hardness and ground level, the cut depth of the left and right earth covering members 6 into the ground can be independently adjusted. Accordingly, a sufficient amount of soil can be covered on the left and right side edge portions of the agricultural film body P.

Also, at this time, the height of the treading body 5 is adjusted in synchronism with the soil covering member 6, so that the amount of the agricultural membrane P stomped on is always properly maintained. Left and right support rod 2
Numeral 0 has vertical waist folding means 22 in the middle of the longitudinal direction, and the waist folding means 22 is configured by pivotally supporting a support arm 23 about a fulcrum Q so as to be vertically movable (swingable). The treading body 5 and the earth covering member 6 mounted on the support arm 23 are urged in the ground direction by the elastic pressure means 24 via the support arm 23.

Left and right resilient means 24 are adapted to vertically support a resilient rod 26 in a bracket 25 which is fixedly mounted on the support rod 20 and which is vertically extended. The coil spring 27 pivotally mounted on the 23A and wound around the resilient rod 26 is interposed between the upper surface of the bracket 25 and the spring receiver 28 mounted on the rod 26 so as to be position-adjustable (changeable). Sign 2
Reference numeral 9 denotes a stopper. A spring support 30 and a support stay 31 are fixed to the left and right support arms 23. The support stay 31 is extended downward, and a wheel stay 32 is pivotally supported at an extended end thereof and extended rearward. In the middle of the wheel stay 32, the adjusting rod 3 inserted through the spring receiver 30
A coil spring 34 is wound around the adjustment rod 33 and biases the stepping body 5 downward via a wheel stay 32.

The right and left treading members 5 are wheel-shaped and supported by a wheel stay 32 via a bowl-shaped bearing 35 so as to be freely rotatable. The outer periphery of the left and right treading members 5 is a resilient structure 5A such as a sponge. Holder 36 that can be freely moved toward and away from left and right pressure members 5
Is mounted on a support bar 37 provided on the wheel stay 32, and the holding member 36 is formed of a bar made of metal, resin, or the like, formed as a sled from the front side of the treading body 5 to the rear downward. By the elastic force of the bar, the tread 5 is extended to the lower central portion, and the left and right side edge portions of the agricultural film body P cooperate with the tread 5 in a state where the tread 5 is raised above the ground. It is configured to be able to pass through the agricultural film body P in this sandwiched state, and also similarly to hold the agricultural film body P when in the grounding state (working posture).

The left and right earth covering members 6 are disposed outside and rearward of the treading body 5, and in the drawing, a rollable dish-shaped disk having a disc angle or the like is illustrated. By moving inward while cutting the soil in, soil can be covered on the left and right side edge portions of the agricultural film body P that has passed through the treading body 5. Others
In FIGS. 2 and 3, the left and right support rods 20 are provided with guide means 38 composed of a pair of upper and lower rolls for sandwiching and guiding the left and right side edges of the agricultural membrane P.

Next, the operation of the first embodiment will be outlined. The roll-wound agricultural film body P is passed through the tensioning means 18 and the left and right side edges thereof are introduced into the guiding means 38, and the covering work unit is held in a state where the agricultural film body P is squeezed (held) by the stepping body 5 and the holding tool 36. 7 is set to the working posture (ground contact state), and the traveling device 2 is caused to travel along the longitudinal direction of the ridge A with the traveling device 2 on the valley B. Since the right and left treads 5 roll by stepping on both side edge portions of the agricultural film P by this traveling, the roll-wound agricultural film P supported by the roll receiving means 15 rolls and unwinds, and the tunnel is rolled out. While covering the support C, the soil is covered with the soil covering member 6, and the covering operation is continued.

At this time, when the valleys B on both the left and right sides sandwiching the ridge A are harder than the normal ground hardness, or when it is desired to cover the left and right side edge portions of the agricultural film body P with more soil than usual. , In the operation valve 71, both the left and right height adjustment means 21 can be operated simultaneously, and the switching valve 72
Is operated by an appropriate amount in the direction in which the fluid pressure drive section 21a of both height adjusting means 21 is to be retracted. As a result, the left and right soil covering members 6 increase the depth of cut into the ground, and the agricultural membrane P
Sufficient soil cover amount is secured for the left and right side edge portions of.

When the valleys B on the left and right sides of the ridge A have different ground hardness and ground level, the operating valve 7
In step 1, the left or right height adjusting means 21 is made operable independently, and the switching valve 72 is operated by an appropriate amount in the direction in which the fluid pressure driving portions 21a of the two height adjusting means 21 are contracted. . This ensures that the soil covering member 6 cuts even on the hard or low-level ground, and secures a sufficient amount of soil covering the left and right side edge portions of the agricultural film body P.

During the coating operation, even if there are irregularities in the valley B, the coating work section 7 is urged to the ground by the resilient means 24 and is supported via the waist breaking means 22. The agricultural film body P is coated while reliably following the irregularities of B. Further, the diameter of the agricultural film body P is reduced with the feeding, but the roll receiving means 15
2, the feed-out position (in FIG. 2, the feed-out position is from below, but it is also possible to feed out from above) does not fluctuate much and the feed-out position is pulled out by the tensioning means 18 in a state where the slack is prevented. .

Further, since the outer periphery of the stepping body 5 is formed as an elastic structure 5A, and the holding member 36 made of a bar is bitten by elastic force, an external force acts on the agricultural film body P by wind pressure during the operation. Even though the agricultural film P is not detached from the tread 5 and has a sled shape, the agricultural film P can be smoothly and lightly gripped and fed out. When the covering operation progresses and the vicinity of the headland of the ridge A is reached, both the left and right height adjusting means 21 can be simultaneously operated in the operation valve 71, and the switching valve 72 is set to the both height adjusting means 21. The fluid pressure drive unit 21a is operated in a direction for extending the operation.

As a result, the left and right covering work sections 7 are lifted (lifted) as shown in FIG. 6 with the respective horizontal shafts 19 as fulcrums. Even in this case, the agricultural film body P is held by the treading body 5 and the holding member 36. Therefore, the traveling body 1 is turned in this lifting posture, and after moving to the next ridge A, the operation valve 71 is moved.
And the switching valve 72 is operated in reverse to the above, and the left and right coating
Can be immediately moved to the covering operation by cutting the ground film to the ground (note that, before turning, the agricultural film body P after the covering work unit 7 is cut by a cutter or the like). FIGS. 7 and 8 show a second embodiment of the present invention. Since the basic configuration and operation are common to those of the above-described first embodiment, common portions are denoted by common reference numerals, and only the differences will be described below. .

The holding member 36 is a spring member 5 having a coil portion 54A on a stay 53 projecting forward from the bowl-shaped bearing 35.
4 is attached to one end piece 54B, and the other end piece 54C is provided with a spatula (plate-shaped or rod-shaped) holding tool 36 for the elastic structure 5A of the stepping body 5.
It is installed by biting from below. Therefore, after inserting the agricultural film body P in a state where the holding member 36 is separated from the elastic structure 5A against the elastic force of the spring member 54, the agricultural film body P is held by the elastic force and the same operation as in the first embodiment is performed. It is.

FIG. 9 shows a third embodiment of the present invention. Since the basic structure and operation are common to those of the first embodiment, common parts are denoted by common reference numerals, and only the differences will be described below. . A plurality of front and rear wheel stays 32 supporting the left and right treading bodies 5 are supported by the left and right support arms 23 (in the illustrated example, 2 and 3).
The fixing rods 33 are fixed at the lower ends of the adjusting rods 33 inserted vertically movably into the provided bearings 80. Each adjustment rod 33 is provided at its upper end with a pin mounting portion 81 for preventing falling off, and a coil spring 34 is wound and mounted below the bearing 80.
The bearing 80 also serves as a spring receiver on the upper side of the coil spring 34. In addition, a pin mounting portion 82 that also functions as a spring force adjustment and a spring stopper for the coil spring 34 is provided below the adjusting rod 33.

With this configuration, even when the treading body 5 passes over uneven ground, the wheel stay 32 is always in a horizontal state (it is not necessary to be strictly horizontal. (It does not cause swinging with one end as a fulcrum), and as a result, the treading body 5 and the holding tool 36 are moved in such a situation according to the unevenness of the ground. It will move up and down synchronously (integrally) with each other along the vertical direction. That is, during this vertical movement, the distance between the stepping body 5 and the holding member 36 is always kept at a constant distance.
The agricultural film bodies P sandwiched between 6 are always subjected to the same clamping angle and the same clamping area under a constant clamping pressure. This prevents the agricultural membrane P from being clogged between the treading body 5 and the holding tool 36.

On the other hand, in the third embodiment, the roll receiving means 15 for supporting the rolled agricultural film P so as to be able to pay out is provided not only in the left-right direction but also in the feeding direction of the agricultural film P. A plurality are provided at predetermined intervals. For this reason, even when the roll diameter of the agricultural film P is reduced, more stable support is possible, and the feeding of the agricultural film P is performed smoothly. Although the embodiment of the present invention is as described above, the following design changes are also possible. Between the film supply section 4 and the coating work section 7, a film guide rod having an arch shape and a forwardly inclined posture may be mounted. The treading body 5 and the earth covering member 6 may be in the shape of a shoe (boat). A raised floor tractor (wheel-type tractor) or the like may be employed as the traveling body 1.

[0044]

As described in detail above, according to the present invention, when the ground on the left and right sides sandwiching the ridges has different ground hardness and ground level, etc., the cut depth of the left and right earth covering members into the ground. Easily and quickly, and the traveling aircraft
The left and right sides can be independently adjusted by a manual operation, and thus the soil can be surely covered on the left and right side edge portions of the agricultural membrane.

[Brief description of the drawings]

FIG. 1 is a diagram illustrating a drive circuit of a part (height adjusting means) of FIG. 2;

FIG. 2 is a side view showing the first embodiment of the present invention.

FIG. 3 is a partially omitted perspective view of FIG. 2;

FIG. 4 is a rear view of a main part of FIG. 2;

FIG. 5 is a side view of the holding unit of FIG. 2;

FIG. 6 is an operation diagram at the time of turning shown in FIG. 2;

FIG. 7 is a side view showing a second embodiment of the present invention.

FIG. 8 is a side view of the holding unit of FIG. 2;

FIG. 9 is a side view showing a third embodiment of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Running body 3 Multi apparatus 4 Membrane supply part 5 Treading body 6 Covering member 15 Roll receiving means 21 Height adjustment means 21a Fluid pressure drive part 36 Clamping tool P Agricultural film body

Claims (3)

(57) [Claims] A traveling body (1) is provided with a film supply section (4).
A covering work section (7), wherein the covering work section (7) comprises a membrane.
Left and right sides of the agricultural membrane (P) supplied from the body supply unit (4)
A tread body (5) for stepping on an edge portion, and the tread body (5)
Soil covering the left and right side edges of the agricultural membrane (P) trampled
Up and down around the horizontal axis (19) with the covering soil member (6)
Provided at the rear of a pair of right and left support rods (20).
The right and left support rods (20) are moved up and down by the fluid pressure drive unit (21a).
A pair of left and right height adjusting means (21) for moving
The right and left height adjusting means (21) is provided with
(5) and the cover member (6) are changed from the ground contact position to the upper position.
The left and right support rods (20) are simultaneously moved up and down
And pressing the left and right earth covering members (6) downward at the ground contact position.
Right and left support rods (2
0) independently moving up and down is referred to as the traveling body (1).
A valve for fluid pressure for switching operation by associated workers
Multi apparatus characterized in that it has. 2. The longitudinal direction of each of the left and right support rods (20).
On the way, the treading body (5) and the earth covering member (6) are
Buckling means for energizing and following the unevenness of the valley (B)
2. The multi-device according to claim 1, further comprising (22) and repression means (24) . 3. A contact between the pair of left and right treads (5).
A detachable holding device (36) is provided.
Is to cover the earth with the stepping body (5) floating above the ground.
The member (6) is configured to be held in cooperation with the treading body (5).
3. The method according to claim 1, wherein
Multi device.